Comments (8)
Closing this issue since the GBS mapper now supports all 256 banks.
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I'm closing this now, on further consideration, .gbs format does not seem suitable for what I intend to do.
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@jkotlinski can you please develop a bit further why it does not seem suitable ?
Having a compact .gbs lsdj "player" would be really interesting!
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Hey, sorry for sending confused and conflicting messages.
I messed around with things and I think actually I got lsdpack LSDj to .gbs conversion working today! Hooray!
Regarding the current ROM bank mapping situation... The v1.02 .gbs format specification makes it fairly clear that MBC5 bank switching is not supported:
"A page is selected into Bank 1 by writing the page number as a byte value somewhere in the address range $2000-$3fff."
So I think it would be impossible to add MBC5 support while conforming to the (presumably dead) .gbs format.
I'm still concerned about lack of space, and I wonder if gbsplayer could make more ROM banks available. Specifically, it looks like it only allows switching to banks 0-31. Why not 0-255?
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I got lsdpack LSDj to .gbs conversion working today! Hooray!
That is huge!
I'll try to test it in a few days, and try to play the resulting .gbs files on several players
At least:
- gbsplay
- MiniGBS
- Game Music Emu
- Do you have other players in mind @jkotlinski ?
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I don't have any particular players in mind. I gave it some light testing on Foobar2000
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I'm still concerned about lack of space, and I wonder if gbsplayer could make more ROM banks available. Specifically, it looks like it only allows switching to banks 0-31. Why not 0-255?
IIRC I was assuming at the time that GBS is supposed to be close to MBC1, which is where the 32 banks limit came from at the time. I think I should fix that and allow 0-255 there.
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Cool!
I realize now that 0-31 is already pretty much (half a megabyte), but supporting 0-255 seems like it possibly can't do any harm.
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